How Can I Determine Turning Clearance With A 5th Wheel When Using Gen-Y Offset Ball?
Updated 01/27/2026 | Published 08/22/2024
Products Featured in This Question
Question:
Recently purchased a 2019 gmc2500 short bed with the factory puck system I have a wildcat 369mb fifth wheel camper I’m wanting to switch the camper to the gen-y gooseneck and use the gen-y offset ball. I’m just wondering how my turning clearance would be
asked by: Eli
Expert Reply:
Hello Eli. The correct Gen-Y offset gooseneck ball for your 2019 GMC 2500 short bed is part # GY23XR. It has a 5" offset. You can use the following formula to determine your turning clearance.
(A + B) - C = Clearance
A = Distance from the fifth wheel jaw center (or gooseneck ball) to the truck cab
B = Offset used (5" in you case)
C = Width of the nose of the trailer divided by 2
As far as the gooseneck pin box (or goosebox as we call it), the # GY38FR you were looking at is designed to replace the Lippert 1621 and 1621 HD pin boxes, so please confirm this is what you have. Also, this model is made for trailers with a pin weight between 2,500 and 4,500 lbs. You can take the GVWR of your 5th wheel and multiply by 0.22 to calculate the approximate pin weight. If you require a different pin box just let me know and I can make sure you get the right one.
Product Page this Question was Asked From
Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box - Lippert 1621/1621HD - 30K GTW - 4.5K TW
- 5th Wheel Gooseneck Adapter
- Adapts Trailer
- 5th Wheel Trailer to Gooseneck Hitch
- No Extra Clearance
- 30000 lbs
- Replaces Pin Box
- Shock Absorbing
- Lippert 1621
- Lippert 1621HD
- Gen-Y Hitch
more information >
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on 5th Wheel Gooseneck Adapter
Jesse M.
1/27/2026
Hey Eli, how did things work out with the Gen-Y offset ball and your Wildcat fifth wheel? Did the 5-inch offset give you enough turning clearance with your GMC short bed? Your update could make it easier for others setting up a similar combo.